Which of the following statements pertaining to air conditioning for an information processing
facility is correct?

A.
The AC units must be controllable from outside the area

B.
The AC units must keep negative pressure in the room so that smoke and other gases are forced
out of the room

C.
The AC units must be on the same power source as the equipment in the room to allow for easier
shutdown

D.
The AC units must be dedicated to the information processing facilities